Jigging conveyer



June24, 1930. J, UTHGOE y 1,766,660

JIGGING CONVEYER Filed DSG. 6I 1927 Patented June 24, 1930 PATENT OFFICE JOHN LITI-IGOE, OF RAWNSCLIFFE, SANDAL, WAKEFIELD, ENGLAND, ASSIGNGR T BRITISH JEFFREY DIAMOND' LEMITED, OF "WAKEFIELD, ENGLAND, A BRITISH COMPANY JIGGING CON VEYER Application led December 6, 1927, Serial No. 238,115, and in Great Britain December 14, `1926.

This invention relates to an improved construction of trough and roller or ball support for jigging conveyers, its chief object being to enable the troughs to be more easily assembled and moved from one position to another.

According to this invention the conveyer comprises a trough, rolling bodies on which the trough can reciprocate, a pair ot stato tionary runways and a pair of movable runways, the latter being secured to the trough and disposed Within the stationary runways so as to form with the stationary runways a housing for the rolling bodies, and portions lo' ot the movable runways being cut away to enable the rolling bodies to engage the walls ot the stationary runways.

In order that the said invention may be clearly understood and readily carried into ed'ect, the same will now be described more fully with reference to the accompanying drawings, in which Figures l, 2 and 3 illustrate diagrammatically a conveyer trough according to the invention; and

Figures a, 5 and 6 illustrate diagrammatically a modification of the arrangement illustrated in Figures l, 2 and 3.

Referring now to Figures l, 2 and 3, a is the jigger trough of the usual section. The stationary component of the unit comprises channel sections L disposed at each side ot the trough. The movable component also comprises channel shaped sections d which are smaller than the channel sections and are disposed therein. Each of the channel shaped sections i has its top flange cut away at one end thereof, and its lower flange cut away at the other end to accommodate the balls j oi' which, in the construction illustrated, there are four. By this arrangement one ball only at each side takes the downward thrust or weight, and the other ball at each side takes the upward thrust where it occurs while both balls at each side absorb any side thrustand keep the movable and stationary components in alignment. Stops s are provided at each end to prevent the escape of the balls.

The two channel shaped sections i are arranged with their cut away ange portions diagonally opposite one another, so that the diagonally opposite pairs of balls are adapted to deal wit-h the downward and upward thrusts respectively. |The movable compo- R5 nents are rigidly secured to the trough A and the stationary components normally rest on the ground and may be secured by props F or other means if necessary.

ln the arrangement illustrated diagrammatically in Figures 4, 5 and 6, the channel shaped sections z' are arranged within the channel shaped sections L with their cut away portions directly opposite one another, instead oi diagonally opposite so that the pair c5 of balls located at the right-hand end of F igures land 5, take the downward reaction while owing to the position at which the stationary member makes Contact with the ground the remaining pair of balls is also under continuous load.

l/Vha-t I claim and desire to secure by Letters Patent of the United-States is A. jigging conveyor comprising a trough, rolling bodies on which the trough can reciprocate, a pair of stationary runways and a pair ot movable runways, the latter being secured to the trough and disposed within the stationary runways so as to torni with the stationary runways a housing for the rolling bodies, said movable runways having portions thereof cut away to enable the rolling bodies to engage the walls of the stationary runways.

J CHN LITHGOE. 

